Patrick Crayton has a dislocated wrist

Malcom Floyd returned at wide receiver for the Chargers Monday night, just in time for San Diego to lose another receiver.

Patrick Crayton has a disclocated wrist, according to ESPN’s Adam Schefter. He’ll undergo an MRI on Tuesday to determine whether he can play again this year.

With Legedu Naanee hurt for much of the year and Vincent Jackson yet to play a game, Crayton turned out to be a key pickup for the Chargers. They acquired him for a seventh-round pick from Dallas and he’s responded with 514 yards and a 18.4 yards-per-catch average.

Jackson will make his season debut Sunday night against the Colts; Antonio Gates’ status is uncertain.